How to move segments from one tablespace to another tablespace?

Question

I have created new tablespace now i want to move the old tablespace segments to new one but how?
Please guide
Thanks,
Waheed.

Answer 1

If it is Oracle 10g you might consider expdp and impdp and use remap_tablespace. After that you can purge the objects from the old tablespace.
Throught PL/SQL scripting also it is possible.
tables
declare
cursor cursor1 is select table_name from dba_tables where tablespace_name in ('USERDATA1');
begin
for cur1_rec in cursor1 loop
     execute immediate 'alter table '||cur1_rec.table_name||' move tablespace userdata2';
end loop;
end;
indexes
declare
cursor cursor1 is select index_name from dba_indexes where tablespace_name in ('USERDATA1');
begin
for cur1_rec in cursor1 loop
begin
     execute immediate 'alter index '||cur1_rec.index_name||' rebuild tablespace userdata2';
exception
when others then
null;
end;
end loop;
end;
/